<template>
  <div class="container">
    <i-row>
      <i-col span="12" class="sortable_container">
        <Form :label-width="100" class="b-a">
          <draggable :clone="cloneData" :list="form_list" :options="dragOptions1">
            <transition-group
              class="form-list-group"
              type="transition"
              :name="'flip-list'"
              tag="div"
            >
              <renders
                v-for="(element,index) in form_list"
                :key="index"
                :ele="element.ele"
                :obj="element.obj || {}"
              ></renders>
            </transition-group>
          </draggable>
        </Form>
      </i-col>
      <i-col span="12" class="sortable_item">
        <Form
          ref="formValidate"
          class="b-a"
          :label-width="100"
          :model="formData"
          @submit.native.prevent
        >
          <Alert style="margin: 15px 15px 0;" type="warning" show-icon>未绑定数据字典控件无效</Alert>
          <draggable :list="sortable_item" :options="dragOptions2">
            <transition-group
              class="form-list-group"
              type="transition"
              :name="'flip-list'"
              tag="div"
            >
              <renders
                @handleRemoveEle="removeEle"
                @handleConfEle="confEle"
                @changeVisibility="changeVisibility"
                v-for="(element,index) in sortable_item"
                :key="index"
                :index="index"
                :ele="element.ele"
                :obj="element.obj || {}"
                :data="formData"
                @handleChangeVal="val => handleChangeVal(val,element)"
                :sortableItem="sortable_item"
                :config-icon="true"
              ></renders>
            </transition-group>
          </draggable>
          <FormItem>
            <Button type="primary" @click="handleSubmit()">提交</Button>
            <Button type="ghost" @click="handleReset()" style="margin-left: 8px">重置</Button>
          </FormItem>
        </Form>
      </i-col>
      <Modal
        v-model="showModal"
        :title="'配置' + modalFormData.modalTitle + '属性'"
        :mask-closable="false"
      >
        <Form class="form_content" :label-width="80" :model="modalFormData" ref="modalFormData">
          <FormItem label="控件名称：" v-if="typeof modalFormData.label != 'undefined'">
            <i-input
              v-model="modalFormData.label"
              placeholder="请输入控件名称"
              :maxlength="4"
              @on-blur="handleDataDictChange"
            ></i-input>
          </FormItem>
          <FormItem label="name属性：" v-if="typeof modalFormData.name != 'undefined'">
            <i-input v-model="modalFormData.name" placeholder clearable></i-input>
          </FormItem>
          <FormItem label="类型：" v-if="typeof modalFormData.name != 'undefined'">
            <Select v-model="modalFormData.sqlType" clearable>
              <Option v-for="item in dataTypes" :value="item.val" :key="item.val">{{ item.name }}</Option>
            </Select>
          </FormItem>
          <FormItem label="关联数据：" v-if="typeof modalFormData.relation != 'undefined'">
            <!-- 当绑定name并且当前relationList存在数据时候才可以关联字段 -->
            <Checkbox
              :disabled="!modalFormData.name || !relationList.length"
              v-model="modalFormData.relation"
            >是否关联字段</Checkbox>
          </FormItem>
          <FormItem
            label="关联配置："
            v-if="typeof modalFormData.relation != 'undefined' && modalFormData.relation"
          >
            <Select
              v-model="modalFormData.relation_name"
              class="inline-block"
              style="width: 150px"
              @on-change="_=>modalFormData.relation_value = ''"
            >
              <Option
                :disabled="item.obj.name == modalFormData.name"
                v-for="(item,index) in relationList"
                :key="index"
                :value="item.obj.name"
              >{{item.obj.label}}</Option>
            </Select>
            <p class="inline-block padder-sm">等于</p>
            <Select
              v-model="modalFormData.relation_value"
              class="inline-block"
              style="width: 150px"
            >
              <Option
                v-for="(item,index) in relationValue"
                :key="index"
                :value="item.label_value"
              >{{item.label_name}}</Option>
            </Select>
          </FormItem>
          <FormItem label="placeholder：" v-if="typeof modalFormData.placeholder != 'undefined'">
            <i-input v-model="modalFormData.placeholder" placeholder="请输入placeholder"></i-input>
          </FormItem>
          <FormItem label="最大长度：" v-if="typeof modalFormData.maxLength != 'undefined'">
            <InputNumber v-model="modalFormData.maxLength" placeholder="请输入文本限制最大长度"></InputNumber>
          </FormItem>
          <FormItem label="最大限制：" v-if="typeof modalFormData.maxSize != 'undefined'">
            <InputNumber
              :formatter="value => `${value}kb`"
              :parser="value => value.replace('kb', '')"
              v-model="modalFormData.maxSize"
              placeholder="请输入上传文件最大限制"
            ></InputNumber>
          </FormItem>
          <FormItem label="上边距：" v-if="typeof modalFormData.marginTop != 'undefined'">
            <InputNumber
              :formatter="value => `${value}px`"
              :parser="value => value.replace('px', '')"
              v-model="modalFormData.marginTop"
              placeholder="请输入标签上边距"
            ></InputNumber>
          </FormItem>
          <FormItem label="下边距：" v-if="typeof modalFormData.marginBottom != 'undefined'">
            <InputNumber
              :formatter="value => `${value}px`"
              :parser="value => value.replace('px', '')"
              v-model="modalFormData.marginBottom"
              placeholder="请输入标签下边距"
            ></InputNumber>
          </FormItem>
          <FormItem label="详细地址：" v-if="typeof modalFormData.details_address != 'undefined'">
            <Checkbox v-model="modalFormData.details_address">是否需要详细地址</Checkbox>
          </FormItem>
          <FormItem label="是否必填：" v-if="typeof modalFormData.require != 'undefined'">
            <Checkbox v-model="modalFormData.require">必填</Checkbox>
          </FormItem>
          <FormItem label="校验错误：" v-if="typeof modalFormData.ruleError != 'undefined'">
            <i-input v-model="modalFormData.ruleError" placeholder="请输入校验错误提示"></i-input>
          </FormItem>
          <FormItem label="选项：" v-if="isSelectBox">
            <div v-for="(item,index) in dataItems" :key="index">
              <input
                v-model="item.label_name"
                placeholder="选项名称"
                clearable
                style="width: 30%;margin-top:8px;margin-right:2%"
              />
              <input
                v-model="item.label_value"
                placeholder="选项值"
                clearable
                style="width: 30%;margin-top:8px;margin-right:2%"
              />
              <Button type="error" @click="removeItem(index)">删除</Button>
              <Button type="primary" @click="addItem()">增加</Button>
            </div>
          </FormItem>
          <FormItem
            label="是否多选："
            v-if="typeof modalFormData.multiple != 'undefined' && modalFormData.type != 'address'"
          >
            <Checkbox v-model="modalFormData.multiple">多选</Checkbox>
          </FormItem>
          <FormItem label="时间格式：" v-if="typeof modalFormData.format != 'undefined'">
            <RadioGroup v-model="modalFormData.format">
              <Radio label="yyyy年MM月dd日"></Radio>
              <Radio label="yyyy-MM-dd HH:mm"></Radio>
            </RadioGroup>
          </FormItem>
          <FormItem label="行内元素：" v-if="typeof modalFormData.inlineBlock != 'undefined'">
            <Checkbox v-model="modalFormData.inlineBlock">是</Checkbox>
          </FormItem>
          <FormItem label="显示行数：" v-if="typeof modalFormData.maxRows != 'undefined'">
            <Slider v-model="modalFormData.maxRows" :min="2" :max="10"></Slider>
          </FormItem>
          <FormItem label="标题大小：" v-if="typeof modalFormData.level != 'undefined'">
            <InputNumber :max="6" :min="1" v-model="modalFormData.level"></InputNumber>
          </FormItem>
          <FormItem label="字体颜色：" v-if="typeof modalFormData.color != 'undefined'">
            <ColorPicker v-model="modalFormData.color" />
          </FormItem>
        </Form>
        <div slot="footer">
          <Button type="text" @click="handleCancel">取消</Button>
          <Button type="primary" :loading="modalFormData.loading" @click="handleOk">确定</Button>
        </div>
      </Modal>
    </i-row>
  </div>
</template>
<script>
import draggable from "vuedraggable";
import form_list from "./custom_form/FormList";
export default {
  components: {
    draggable
  },
  data() {
    return {
      form_list: form_list,
      sortable_item: [],
      showModal: false,
      // 深拷贝对象，防止默认空对象被更改
      // 颜色选择器bug，对象下color不更新
      modalFormData: {
        color: "",
        loading: false
      },
      formData: {},
      dataDict: [],
      dataTypes: [
        { name: "字符串", val: "string" },
        { name: "整数", val: "int" }
      ]
    };
  },
  methods: {
    // 克隆表单提交事件
    handleSubmit() {
      console.log(JSON.stringify(this.sortable_item));
      localStorage.setItem(
        "template_form",
        JSON.stringify(
          this.sortable_item.filter(v => {
            return !!v.obj.name;
          })
        )
      );
      this.$http
        .post("http://172.16.10.70:3000/from/createForMongo", {
          title: "test",
          fromData: this.sortable_item
        })
        .then(result => {
          const id = result.data.data._id;
          this.$router.push({ name: "render", params: { id } });
        });
    },
    // 清空克隆表单
    handleReset() {
      this.sortable_item = [];
    },
    // modal内数据字典选项发生改变触发事件
    handleDataDictChange() {
      if (
        this.modalFormData.label &&
        !this.modalFormData.sqlType &&
        !this.modalFormData.name
      ) {
        this.dataDict.filter(item => {
          console.log(item);
          console.log(this.modalFormData);
          debugger;
          if (this.modalFormData.label == item.label) {
            this.modalFormData = Object.assign({}, this.modalFormData, {
              sqlType: item.sqlType,
              name: item.name
            });
          }
        });
      }
    },
    // 控件回填数据
    handleChangeVal(val, element) {
      this.$set(this.formData, element.obj.name, val);
    },
    // https://github.com/SortableJS/Vue.Draggable#clone
    // 克隆,深拷贝对象
    cloneData(original) {
      // 添加一个modal标题
      original.obj.modalTitle = original.obj.label || "";
      // 深拷贝对象，防止默认空对象被更改
      return JSON.parse(JSON.stringify(original));
    },
    // modal点击确定执行事件
    handleOk() {
      debugger;
      const index = this.modalFormData.listIndex;
      console.log(this.modalFormData);
      this.sortable_item[index].obj = Object.assign(
        {},
        this.sortable_item[index].obj,
        this.modalFormData
      );
      this.handleCancel();
    },
    // modal点击取消执行事件，清空当前modal内容
    handleCancel() {
      this.showModal = false;
      setTimeout(_ => {
        this.modalFormData = {
          color: "",
          loading: false
        };
      }, 500);
    },
    // 显示modal,配置被克隆控件
    confEle(index) {
      const list_temp = Object.assign({}, this.sortable_item[index]);
      for (let i in list_temp.obj) {
        this.modalFormData[i] = list_temp.obj[i];
      }
      // 配置项中未找到color，删除modalFormData中自带color属性
      if (!list_temp.obj["color"]) delete this.modalFormData.color;
      // 设置被配置控件的index，便于完成配置找到相应对象赋值
      this.modalFormData.listIndex = index;
      // Vue 不能检测到对象属性的添加或删除
      this.modalFormData = Object.assign({}, this.modalFormData);
      this.showModal = true;
    },
    // 删除克隆控件
    removeEle(index) {
      let name = this.sortable_item[index].obj.name;
      this.sortable_item.splice(index, 1);
      if (!name) return;
      for (let i in this.sortable_item) {
        // 当relation为true并且关联字段被确认
        if (
          this.sortable_item[i].obj.relation &&
          this.sortable_item[i].obj.relation_name === name
        ) {
          this.$set(this.sortable_item[i].obj, "relation", false);
          this.$set(this.sortable_item[i].obj, "relation_name", "");
          this.$set(this.sortable_item[i].obj, "relation_value", "");
          break;
        }
      }
    },
    // 更改当前渲染字段是否显示
    changeVisibility(index, visibility) {
      this.$set(this.sortable_item[index].obj, "visibility", visibility);
    },
    removeItem(index) {
      if (this.modalFormData.items.length > 1) {
        delete this.modalFormData.items.splice(index, 1);
      } else {
        this.modalFormData.items = [
          {
            label_value: "",
            label_name: ""
          }
        ];
      }
    },
    addItem() {
      const _length = this.modalFormData.items.length;
      this.modalFormData.items.push({
        label_value: "",
        label_name: ""
      });
    }
  },
  watch: {
    showModal(val) {
      if (!val) {
        this.handleCancel();
      }
    }
  },
  computed: {
    // 数据字典已选择项
    dataDictSelected() {
      return this.sortable_item.map(v => {
        const obj = JSON.parse(v.obj.dict || "{}");
        return obj.id || -1;
      });
    },
    dataItems() {
      if (!this.modalFormData.items) {
        this.modalFormData.items = [
          {
            label_value: "",
            label_name: ""
          }
        ];
      }
      return this.modalFormData.items;
    },
    isSelectBox() {
      return (
        this.modalFormData.type == "checkbox" ||
        this.modalFormData.type == "select" ||
        this.modalFormData.type == "radio"
      );
    },
    // 对应控件的数据字典
    dataDictList() {
      return this.dataDict.filter(v => {
        return v.type == this.modalFormData.type;
      });
    },
    // 拖拽表单1
    dragOptions1() {
      return {
        animation: 0,
        ghostClass: "ghost",
        // 分组
        group: {
          name: "shared",
          pull: "clone",
          revertClone: false
        },
        // 禁止拖动排序
        sort: false
      };
    },
    // 拖拽表单2
    dragOptions2() {
      return {
        animation: 0,
        ghostClass: "ghost",
        group: {
          // 只允许放置shared的控件,禁止pull
          put: ["shared"]
        }
      };
    },
    // 被关联字段列表
    relationList() {
      // 只有type内三项可作为被关联字段
      let type = ["select", "radio", "checkbox"];
      const arr = this.sortable_item.filter(k => {
        return type.indexOf(k.ele) >= 0 && !!k.obj.name;
      });
      return arr;
    },
    // 被关联字段数据
    relationValue() {
      const name = this.modalFormData.relation_name;
      let items = [];
      if (!name) return items;
      for (let i in this.sortable_item) {
        if (this.sortable_item[i].obj.name == name) {
          items = this.sortable_item[i].obj.items;
        }
      }
      return items;
    }
  },
  created() {
    // /static/label.json
    this.$http.get("/static/label.json").then(d => {
      this.dataDict = d.data.items;
    });
    this.sortable_item = JSON.parse(
      localStorage.getItem("template_form") || "[]"
    );
  }
};
</script>
<style>
.inline {
  display: inline-block;
}

.m-l-lg {
  margin-left: 30px;
}

.wrapper {
  padding: 15px;
}

.inline-block {
  display: inline-block;
}

.padder-sm {
  padding-right: 10px;
  padding-left: 10px;
}

.b-a {
  border: 1px solid #ccc;
}

.ghost {
  opacity: 0.5;
  background: #c8ebfb;
}

.form-list-group {
  min-height: 200px;
  padding: 20px !important;
}

/* 设置items下所有鼠标样式为 move */

.items,
.items * {
  cursor: move;
}

/* 配置按钮默认位置 */

/* 例如P Hr Title按钮 */

.items .item-icon {
  transition: all 2s ease;
  position: absolute;
  top: -18px;
  right: 0px;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
}

/* form控件下配置按钮位置 */

.ivu-form-item.items .item-icon {
  top: -25px;
}

/* 配置按钮样式 */

.item-icon i {
  cursor: pointer !important;
  margin-right: 5px;
}

.items:hover .item-icon {
  transition: inherit;
  opacity: 1;
  max-height: 50px;
}

/* 提交按钮下方无 margin-bottom */

.form_content .ivu-form-item:last-child {
  margin-bottom: 0;
}

/* 表单校验选项样式 */

.ivu-form-item-required .ivu-form-item-label:before {
  content: "";
}

.items.sortable-items-required .ivu-form-item-label:before {
  content: "*";
  display: inline-block;
  margin-right: 4px;
  line-height: 1;
  font-family: SimSun;
  font-size: 12px;
  color: #ed3f14;
}

.sel-box {
  position: relative;
  padding-left: 18px;
  width: 430px;
  padding-right: 40px;
  /*width: 458px;
  padding-left: 40px;*/
}
</style>
